Apply provider & restructure (duytq94#55)

Author: duytq94

README.md

@@ -17,4 +17,8 @@
 ## How to run
 * Clone this repo
 * Run `flutter packages get`
-* Run `flutter run` (remember open simulator or connect physical device, iOS auto run additional command `pod install`)
+* Run `flutter run` (remember open simulator or connect physical device, iOS auto run additional command `pod install`)
+
+## Big update
+* Jun, 4th, 2021 — Migrating to Flutter 2 and using Dart sound null safety, so maybe some template code in this article is outdated, please check source code for the latest.
+* Oct, 2th, 2021 - Apply provider & restructure

images/app_icon.png

@@ -5,4 +5,4 @@ class AppConstants {
   static const chatTitle = "Chat";
   static const settingsTitle = "Settings";
   static const fullPhotoTitle = "Full Photo";
-}
+}

lib/constants/app_constants.dart

@@ -1 +1,2 @@
 export 'color_constants.dart';
+export 'firestore_constants.dart';

lib/constants/constants.dart

@@ -0,0 +1,14 @@
+class FirestoreConstants {
+  static const pathUserCollection = "users";
+  static const pathMessageCollection = "messages";
+  static const nickname = "nickname";
+  static const aboutMe = "aboutMe";
+  static const photoUrl = "photoUrl";
+  static const id = "id";
+  static const chattingWith = "chattingWith";
+  static const idFrom = "idFrom";
+  static const idTo = "idTo";
+  static const timestamp = "timestamp";
+  static const content = "content";
+  static const type = "type";
+}

lib/constants/firestore_constants.dart

@@ -1,26 +1,72 @@
+import 'package:cloud_firestore/cloud_firestore.dart';
+import 'package:firebase_auth/firebase_auth.dart';
 import 'package:firebase_core/firebase_core.dart';
+import 'package:firebase_storage/firebase_storage.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_chat_demo/constants/app_constants.dart';
+import 'package:flutter_chat_demo/providers/auth_provider.dart';
+import 'package:google_sign_in/google_sign_in.dart';
+import 'package:provider/provider.dart';
+import 'package:shared_preferences/shared_preferences.dart';
 
 import 'constants/color_constants.dart';
 import 'pages/pages.dart';
+import 'providers/providers.dart';
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
   await Firebase.initializeApp();
-  runApp(MyApp());
+  SharedPreferences prefs = await SharedPreferences.getInstance();
+  runApp(MyApp(prefs: prefs));
 }
 
 class MyApp extends StatelessWidget {
+  final SharedPreferences prefs;
+  final FirebaseFirestore firebaseFirestore = FirebaseFirestore.instance;
+  final FirebaseStorage firebaseStorage = FirebaseStorage.instance;
+
+  MyApp({required this.prefs});
+
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      title: AppConstants.appTitle,
-      theme: ThemeData(
-        primaryColor: ColorConstants.themeColor,
+    return MultiProvider(
+      providers: [
+        ChangeNotifierProvider<AuthProvider>(
+          create: (_) => AuthProvider(
+            firebaseAuth: FirebaseAuth.instance,
+            googleSignIn: GoogleSignIn(),
+            prefs: this.prefs,
+            firebaseFirestore: this.firebaseFirestore,
+          ),
+        ),
+        Provider<SettingProvider>(
+          create: (_) => SettingProvider(
+            prefs: this.prefs,
+            firebaseFirestore: this.firebaseFirestore,
+            firebaseStorage: this.firebaseStorage,
+          ),
+        ),
+        Provider<HomeProvider>(
+          create: (_) => HomeProvider(
+            firebaseFirestore: this.firebaseFirestore,
+          ),
+        ),
+        Provider<ChatProvider>(
+          create: (_) => ChatProvider(
+            prefs: this.prefs,
+            firebaseFirestore: this.firebaseFirestore,
+            firebaseStorage: this.firebaseStorage,
+          ),
+        ),
+      ],
+      child: MaterialApp(
+        title: AppConstants.appTitle,
+        theme: ThemeData(
+          primaryColor: ColorConstants.themeColor,
+        ),
+        home: SplashPage(),
+        debugShowCheckedModeBanner: false,
       ),
-      home: LoginPage(),
-      debugShowCheckedModeBanner: false,
     );
   }
 }

lib/main.dart

@@ -0,0 +1,37 @@
+import 'package:cloud_firestore/cloud_firestore.dart';
+import 'package:flutter_chat_demo/constants/constants.dart';
+
+class MessageChat {
+  String idFrom;
+  String idTo;
+  String timestamp;
+  String content;
+  int type;
+
+  MessageChat({
+    required this.idFrom,
+    required this.idTo,
+    required this.timestamp,
+    required this.content,
+    required this.type,
+  });
+
+  Map<String, dynamic> toJson() {
+    return {
+      FirestoreConstants.idFrom: this.idFrom,
+      FirestoreConstants.idTo: this.idTo,
+      FirestoreConstants.timestamp: this.timestamp,
+      FirestoreConstants.content: this.content,
+      FirestoreConstants.type: this.type,
+    };
+  }
+
+  factory MessageChat.fromDocument(DocumentSnapshot doc) {
+    String idFrom = doc.get(FirestoreConstants.idFrom);
+    String idTo = doc.get(FirestoreConstants.idTo);
+    String timestamp = doc.get(FirestoreConstants.timestamp);
+    String content = doc.get(FirestoreConstants.content);
+    int type = doc.get(FirestoreConstants.type);
+    return MessageChat(idFrom: idFrom, idTo: idTo, timestamp: timestamp, content: content, type: type);
+  }
+}

lib/models/message_chat.dart

@@ -1 +1,2 @@
+export 'message_chat.dart';
 export 'user_chat.dart';

lib/models/models.dart

@@ -1,4 +1,5 @@
 import 'package:cloud_firestore/cloud_firestore.dart';
+import 'package:flutter_chat_demo/constants/constants.dart';
 
 class UserChat {
   String id;
@@ -8,18 +9,26 @@ class UserChat {
 
   UserChat({required this.id, required this.photoUrl, required this.nickname, required this.aboutMe});
 
+  Map<String, String> toJson() {
+    return {
+      FirestoreConstants.nickname: nickname,
+      FirestoreConstants.aboutMe: aboutMe,
+      FirestoreConstants.photoUrl: photoUrl,
+    };
+  }
+
   factory UserChat.fromDocument(DocumentSnapshot doc) {
     String aboutMe = "";
     String photoUrl = "";
     String nickname = "";
     try {
-      aboutMe = doc.get('aboutMe');
+      aboutMe = doc.get(FirestoreConstants.aboutMe);
     } catch (e) {}
     try {
-      photoUrl = doc.get('photoUrl');
+      photoUrl = doc.get(FirestoreConstants.photoUrl);
     } catch (e) {}
     try {
-      nickname = doc.get('nickname');
+      nickname = doc.get(FirestoreConstants.nickname);
     } catch (e) {}
     return UserChat(
       id: doc.id,